William Walter Pradelski

US Patent:

7111529, Sep 26, 2006

Filed:

Jul 25, 2003

Appl. No.:

10/628037

Inventors:

William W. Pradelski - Frankfort IL, US

International Classification:

B25B 13/12

US Classification:

81179

Abstract:

A ratchetable open-ended wrench having a slidable retractable jaw member in a slot in one of its jaws and having a cover plate, preferably two cover plates, welded to the jaw in a manner such that the cover plate forms a load-bearing structural member within the jaw.

US Patent:

55334288, Jul 9, 1996

Filed:

Nov 21, 1994

Appl. No.:

8/343238

Inventors:

William M. Pradelski - Mokena IL

International Classification:

B25B 1312

US Classification:

81179

Abstract:

A wrench allows the user to apply sequential strokes to a rotatable element such as an hexagonal nut or bolt without removing the wrench from the element. sub. --. The wrench has a head with two jaws adapted to engage the rotatable element. A spring-mounted, retractable jaw member is linearly slidable within a slot in one of the jaws and biased toward the base of the wrench head. The retractable jaw member also has an exposed engaging surface on one side. The opposing jaw has another fixed engaging surface extending substantially parallel to the engaging surface on the retractable jaw member. The two engaging surfaces cooperate to grip a rotatable element and apply torque to the element to rotate it in one direction. On the return stroke, a relatively small amount of resistance from the rotatable element forces the retractable jaw member inward into its slot, allowing the wrench to rotate back around the element without turning it in the reverse direction.